String action gauge for string musical instrument



FIG. 1 is a top perspective view of a string action gauge for string musical instrument showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top elevation view thereof;

FIG. 4 is a bottom elevation view thereof;

FIG. 5 is a right edge view thereof;

FIG. 6 is left edge view thereof;

FIG. 7 is a front edge view thereof; and,

FIG. 8 is a rear edge view thereof.

The broken lines in FIGS. 1-8 represent the portions of the string action gauge for string musical instrument which form no part of the claimed design. 

CLAIM The ornamental design for a string action gauge for string musical instrument, as shown and described. 